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Microsaccade rate activity during the preparation of pro- and antisaccades

Sofia Krasovskaya Orcid Logo, Árni Kristjánsson, Joe MacInnes Orcid Logo

Attention, Perception, & Psychophysics

Swansea University Author: Joe MacInnes Orcid Logo

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DOI (Published version): 10.3758/s13414-023-02731-3

Abstract

Microsaccades belong to the category of fixational micromovements and may be crucial for image stability on the retina. Eye movement paradigms typically require fixational control, but this does not eliminate all oculomotor activity. The antisaccade task requires a planned eye movement in the direct...

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Published in: Attention, Perception, & Psychophysics
ISSN: 1943-3921 1943-393X
Published: Springer Science and Business Media LLC
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URI: https://cronfa.swan.ac.uk/Record/cronfa63626
first_indexed 2023-06-13T10:29:54Z
last_indexed 2024-11-15T18:01:59Z
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spelling 2023-09-04T12:45:21.3400573 v2 63626 2023-06-13 Microsaccade rate activity during the preparation of pro- and antisaccades 06dcb003ec50192bafde2c77bef4fd5c 0000-0002-5134-1601 Joe MacInnes Joe MacInnes true false 2023-06-13 MACS Microsaccades belong to the category of fixational micromovements and may be crucial for image stability on the retina. Eye movement paradigms typically require fixational control, but this does not eliminate all oculomotor activity. The antisaccade task requires a planned eye movement in the direction opposite of an onset, allowing separation of planning and execution. We build on previous studies of microsaccades in the antisaccade task using a combination of fixed and mixed pro- and antisaccade blocks. We hypothesized that microsaccade rates may be reduced prior to the execution of antisaccades as compared with regular saccades (prosaccades). In two experiments, we measured microsaccades in four conditions across three trial blocks: one block each of fixed prosaccade and antisaccade trials, and a mixed block where both saccade types were randomized. We anticipated that microsaccade rates would be higher prior to antisaccades than prosaccades due to the need to preemptively suppress reflexive saccades during antisaccade generation. In Experiment 1, with monocular eye tracking, there was an interaction between the effects of saccade and block type on microsaccade rates, suggesting lower rates on antisaccade trials, but only within mixed blocks. In Experiment 2, eye tracking was binocular, revealing suppressed microsaccade rates on antisaccade trials. A cluster permutation analysis of the microsaccade rate over the course of a trial did not reveal any particular critical time for this difference in microsaccade rates. Our findings suggest that microsaccade rates reflect the degree of suppression of the oculomotor system during the antisaccade task. Journal Article Attention, Perception, & Psychophysics Springer Science and Business Media LLC 1943-3921 1943-393X 0 0 0 0001-01-01 10.3758/s13414-023-02731-3 http://dx.doi.org/10.3758/s13414-023-02731-3 COLLEGE NANME Mathematics and Computer Science School COLLEGE CODE MACS Swansea University Data collection and analysis were partially funded by the University of Iceland's research fund, the Icelandic Research Fund and the HSE academic fund program for the scientific research lab “Vision Modelling Lab.” 2023-09-04T12:45:21.3400573 2023-06-13T11:16:17.6841784 Faculty of Science and Engineering School of Mathematics and Computer Science - Computer Science Sofia Krasovskaya 0000-0002-9120-7407 1 Árni Kristjánsson 2 Joe MacInnes 0000-0002-5134-1601 3
title Microsaccade rate activity during the preparation of pro- and antisaccades
spellingShingle Microsaccade rate activity during the preparation of pro- and antisaccades
Joe MacInnes
title_short Microsaccade rate activity during the preparation of pro- and antisaccades
title_full Microsaccade rate activity during the preparation of pro- and antisaccades
title_fullStr Microsaccade rate activity during the preparation of pro- and antisaccades
title_full_unstemmed Microsaccade rate activity during the preparation of pro- and antisaccades
title_sort Microsaccade rate activity during the preparation of pro- and antisaccades
author_id_str_mv 06dcb003ec50192bafde2c77bef4fd5c
author_id_fullname_str_mv 06dcb003ec50192bafde2c77bef4fd5c_***_Joe MacInnes
author Joe MacInnes
author2 Sofia Krasovskaya
Árni Kristjánsson
Joe MacInnes
format Journal article
container_title Attention, Perception, & Psychophysics
institution Swansea University
issn 1943-3921
1943-393X
doi_str_mv 10.3758/s13414-023-02731-3
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Mathematics and Computer Science - Computer Science{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Mathematics and Computer Science - Computer Science
url http://dx.doi.org/10.3758/s13414-023-02731-3
document_store_str 0
active_str 0
description Microsaccades belong to the category of fixational micromovements and may be crucial for image stability on the retina. Eye movement paradigms typically require fixational control, but this does not eliminate all oculomotor activity. The antisaccade task requires a planned eye movement in the direction opposite of an onset, allowing separation of planning and execution. We build on previous studies of microsaccades in the antisaccade task using a combination of fixed and mixed pro- and antisaccade blocks. We hypothesized that microsaccade rates may be reduced prior to the execution of antisaccades as compared with regular saccades (prosaccades). In two experiments, we measured microsaccades in four conditions across three trial blocks: one block each of fixed prosaccade and antisaccade trials, and a mixed block where both saccade types were randomized. We anticipated that microsaccade rates would be higher prior to antisaccades than prosaccades due to the need to preemptively suppress reflexive saccades during antisaccade generation. In Experiment 1, with monocular eye tracking, there was an interaction between the effects of saccade and block type on microsaccade rates, suggesting lower rates on antisaccade trials, but only within mixed blocks. In Experiment 2, eye tracking was binocular, revealing suppressed microsaccade rates on antisaccade trials. A cluster permutation analysis of the microsaccade rate over the course of a trial did not reveal any particular critical time for this difference in microsaccade rates. Our findings suggest that microsaccade rates reflect the degree of suppression of the oculomotor system during the antisaccade task.
published_date 0001-01-01T14:31:19Z
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score 11.048149

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